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WebLogic 6.0 SP2, Solaris versus Windows NT/2000 (HotSpot JVM)

Steve Feldman
Greenhorn

Joined: Jun 20, 2001
Posts: 21
Fellow Developers/Administrators,
I have an unusual performance issue that baffles the mind. I have been running a simple (4) node WebLogic 6.0SP2 cluster on Windows NT for the past 8 months. I am using the JDK 1.3.0 (HotSpot Client). I've tuned my cluster to extreme lengths and it runs very efficiently. I've got a (4) CPU (900+MHz P3) with (4) GB of RAM.
Recently, I was requested to move the cluster from NT to Sun. No problem...I ported everything over, made some minor tuning adjustments and wahlah...I had a (4) node WebLogic cluster on Sun. (4) CPU (900 MHz Sparc III) with (4) GB of RAM
Well, since moving the identical cluster application from NT to SUN, I have seen considerable performance issues. I understand that the hardware is different, but tasks that normally take 10s on NT (pulling medium to large data sets from Oracle) are now taking up to 4 minutes in my Sun environment.
Has anyone seen anything like this before? Do you know of anyway to overcome this issue?
 
It is sorta covered in the JavaRanch Style Guide.
 
subject: WebLogic 6.0 SP2, Solaris versus Windows NT/2000 (HotSpot JVM)